Illegal sized bounds: only suggest mutability change if needed #105491
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In a scenario like
```
struct Type;
pub trait Trait {
fn function(&mut self)
where
Self: Sized;
}
impl Trait for Type {
fn function(&mut self) {}
}
fn main() {
(&mut Type as &mut dyn Trait).function();
}
```
the problem is Sized, not the mutability of self. Thus don't emit the
"you need &T instead of &mut T" note, or the other way around, as all
it does is just invert the mutability of whatever was supplied.
Fixes rust-lang#103622.
|
Thanks for the pull request, and welcome! The Rust team is excited to review your changes, and you should hear from @compiler-errors (or someone else) soon. Please see the contribution instructions for more information. |
rustbot
added
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|
Thanks! @bors r+ rollup |
bors
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Dylan-DPC
added a commit
to Dylan-DPC/rust
that referenced
this pull request
Dec 13, 2022
Illegal sized bounds: only suggest mutability change if needed
In a scenario like
```rust
struct Type;
pub trait Trait {
fn function(&mut self)
where
Self: Sized;
}
impl Trait for Type {
fn function(&mut self) {}
}
fn main() {
(&mut Type as &mut dyn Trait).function();
}
```
the problem is Sized, not the mutability of self. Thus don't emit the "you need &T instead of &mut T" note, or the other way around, as all it does is just invert the mutability of whatever was supplied.
Fixes rust-lang#103622.
Dylan-DPC
added a commit
to Dylan-DPC/rust
that referenced
this pull request
Dec 13, 2022
Illegal sized bounds: only suggest mutability change if needed
In a scenario like
```rust
struct Type;
pub trait Trait {
fn function(&mut self)
where
Self: Sized;
}
impl Trait for Type {
fn function(&mut self) {}
}
fn main() {
(&mut Type as &mut dyn Trait).function();
}
```
the problem is Sized, not the mutability of self. Thus don't emit the "you need &T instead of &mut T" note, or the other way around, as all it does is just invert the mutability of whatever was supplied.
Fixes rust-lang#103622.
bors
added a commit
to rust-lang-ci/rust
that referenced
this pull request
Dec 14, 2022
…iaskrgr Rollup of 7 pull requests Successful merges: - rust-lang#103644 (Add docs for question mark operator for Option) - rust-lang#105161 (Refine when invalid prefix case error arises) - rust-lang#105491 (Illegal sized bounds: only suggest mutability change if needed) - rust-lang#105502 (Suggest impl in the scenario of typo with fn) - rust-lang#105523 (Suggest `collect`ing into `Vec<_>`) - rust-lang#105595 (Suggest dereferencing receiver arguments properly) - rust-lang#105611 (fold instead of obliterating args) Failed merges: r? `@ghost` `@rustbot` modify labels: rollup
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In a scenario like
the problem is Sized, not the mutability of self. Thus don't emit the "you need &T instead of &mut T" note, or the other way around, as all it does is just invert the mutability of whatever was supplied.
Fixes #103622.